Green-synthesis and characterization of novel ZnO: Ago: TiO2 nanocomposite for antibacterial activity

Green-synthesis of nanocomposite materials using plant extract is a new procedure to develop in nanotechnology. The green path to nanocomposite synthesis is both environmentally benign and produces better outcomes than traditional methods. In this present work, zinc oxide: silver oxide: titanium dioxide nanocomposite prepared and characterized using eco-friendly green synthesis via plant extract of Lawsonia Inermis or (Henna). G-XRD, EDX, FE- SEM, DLS, and FTIR techniques characterized and analyzed ZnO: AgO: TiO2 nanocomposite (ZATNc). G-XRD and EDX patterns reveal the formation of polycrystalline crystal structure with phases; TiO2 (tetragonal), AgO (monoclinic), and ZnO (hexagonal) in nanosize scale range. On the other hand, FE-SEM and DLS analysis of ZATNc gave the nanoscale range of 31-32 nm. Furthermore, FTIR spectra of ZATNc showed a shift in the bands compared to those bands produced by Lawsonia Inermis plant extract (only). So that, they offer a difference in functional groups and antibacterial activity. The results demonstrated excellent antibacterial activity of ZATNc against E. coli, S. aureus, and P.aeruginosa better than Lawsonia Inermis plant extract (only). Also, ZATNc showed a large antibacterial inhibition zone diameter of E. coli pathogens than other bacteria (i.e., S. aureus and P.aeruginosa).